The world knows this is not just Trump’s work. Trump was allowed to become president a second time after inciting a treasonous insurrection. A majority of both houses of Congress and Supreme Court justices have supported him in his depredations. Until these demons are exorcised, the United States is not trustworthy and wise foreign leaders will not see it as so.
The United States is not going to be forgiven the disaster this war with Iran is causing, not for generations. China may rise to their newfound preeminence, as the United States did after World War II, but that is going to take time; they will not change while Xi Jinping is dictator.